They've screwed things up so much
They haven't 'screwed up' much more than anyone else recently, and in terms of privacy and underhand corporate crap, they have come in for far less stick than Apple, Facebook and Google recently (IMO). If any of those had taken over Skype I would have stopped using it in a heart beat.
Of course, it could be argued that Microsoft just aren't as competent at abusing our personal data or being devious as the others - but they sure seem like the lesser of four evils to me. Sure, not much in it, sure, but if I had to choose ..etc
.. and much as I like Skype, they weren't exactly safe pair of hands - every change they have done for the last couple of years has moved a step closer to stopping using it. Fortunately, now I use the linux version I am free of most of the 'bells and whistles' that have been annoying me. I just hope they leave the damned thing alone - it works OK, let me carry on using it as it is please.